Welcome! Welcome to my blog : The Snub Disphenoid. This is my first post to this blog as well as the first nugget of content that I've published online! I am currently in college in the UK studying Maths, Physics and Computer Science, and aptly I will be studying Maths with Computation next year in university. Snub Disphenoid Above is the snub disphenoid , also known as a Siamese dodecahedron , triangular dodecahedron , trigonal dodecahedron , or dodecadeltahedron . It is defined as a convex polyhedron with 12 equilateral triangles as its faces, the 84th Johnson solid, and less commonly as a "square antiprism", whatever that means... Breaking the name down, 'snub' has its own slightly confusing mathematical definition, which you can read about here . It also has a more widely used definition: To insult someone by not giving them any attention or treating them as if they are not important ...